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Question

What is the percentage of carbon in hard steel?

A
0.1 to 0.4
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B
1.5 to 2.5
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C
2.5 to 3.5
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D
0.5 to 1.5
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Solution

The correct option is D 0.5 to 1.5
Hard steel usually refers to quenched or quenched and tempered steel.

The percentage of carbon in hard steel is 0.5 to 1.5.

Hence, option D is correct.

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